Mineral or ore washing jig.



PATENTED OCT. 11, 1904.

C. J. HODGE.

MINERAL OR ORE WASHING-HG.

APPLIOATION FILED MAR. 25. 1901.

5 SHEETS-SHEET 1.

N0 MODEL.

PATENTED OUT. 11, 1904.

- r 0. J. HODGE.

MINERAL OR ORE WASHING J'IG.

APPLIOATION FILED MAR. 26, 1901.

5 SHEETS-SHEET 2.

N0 MODEL.

PATENTED OCT. 11, 1904.

C. J. HODGE.

MINERAL 0R ORE WASHING JI-G.

APPLIGATION FILED MAR. 25. 1901.

5 SHEETS-SHEET 8.

NO MODEL.

PATENTED OCT. 11, 1904. O. J. HODGE.

MINERAL OR ORB WASHING JIG. APPLICATION FILED MAR. 25. 1901.

5 sums-SHEET 4.

4L v 5 v HHWLILI Av 6 n NO MODEL.

nun C Mr? E5525 No. 771.909. BATENTED 001. 11, 1904.

MINERAL 0R ORE WASHING, JIG.

APPLICATION FILED MAR. 25. 1901.

N0 MODEL.

5 SHEETS-SHEET 5.

y g g b. a A7272 UNITED STATES Patented October 11, 1904.

PATENT OFFICE.

MINERAL OR ORE WASHING dlG.

SPECIFICATION forming part of Letters Patent No. 771,909, dated October 11, 1904. Application filed March 25, 1901. Serial No. 52,777. (No model.)

To all whom it may concern:

Be it known that LOHARLEs J. HODGE, a citizen of the United States, residing at Houghton, in the county of Houghton and State of Michigan, have invented certain new and useful Improvements in Mineral or Ore Washing Jigs, of which the following is a full, clear, and eXact specification. My invention relates to mineral or ore washing jigs in which one or more vertically-reciprocating plungers are employed for agitating the water and mineral being treated; and it has more especial reference to the mechanical movement for imparting a fast and slow motion to the plunger or plungers, it being desirable in such machines to cause the plunger to descend rapidly and rise slowly.

The primary object of my invention is to provide an improved mechanical movement for thus reciprocating the plungers that may be attached to the shaft at a point between its bearings, so that the strain on the bearings when two plungers are employed will be equally distributed, a further object being to provide a mechanical movement capable of nice adjustment, whereby the relative positions of the two plungers may be varied and the degree of variation between the fast and slow movements also changed at will.

A still further object of my invention is to provide means whereby the mechanism may be changed at will for depressing the plungers either together or alternately, and a still further object of my invention is to incorporate with said eccentric-operating mechanism a suitable fly-wheel at a point between the end bearings of the shaft, so that the strain on the bearings resulting from the resistance or action of the plungers and from the centrifugal force of the fly-wheel will be equally distributed between the bearings and the parts evenly balanced.

With these ends in view my invention consists in certain features of novelty in the construction, combination, and arrangement of parts bywhich the said objects and certain other objects hereinafter appearing are at tained, all as fully described with reference to the accompanying drawings, and more particularly pointed out in the claim.

In the said drawings, Figure 1 is a side elevation, partly in vertical longitudinal section, showing a mineral or ore washing jig embodying my improvements. Fig. l is a similar view of the upper part enlarged. Fig. 2 is an enlarged detail sectional view showing the means for attaching the adjacent eccentrics together, hereinafter described. Fig. 3 is a plan view. Fig. 4 is a vertical transverse section taken on the line 4 i, Fig. 1. Fig. 5 is a detail section through the bracket, taken on the line 5 5, Fig. 4:. Fig. 6 is a diagrammatic view of the movement. Fig. 7 is a detail section on the line 7 7, Fig. 1. Fig. 8 is a detail section on the line 8 8, Fig. 1; and Fig. 9 is a detail sectional face view on the line 9 9, Fig. 1.

In illustrating my invention I have shown it as applied to a mineral or ore washing jig. This is the greatest field of usefulness for the invention at present known to me; but at the same time it will nevertheless be understood that my invention is not limited to this particular use, but may be applied Wherever the characteristics of the device are required or desirable.

1 2 represent the plungers of the jig located, as usual, in their respective plungercompartments3 4 and eachhaving clamps 5 6, connected together by a yoke 5", (see Fig. 4,) or any other suitable means may be employed for connecting the plungers to their respective operating-pitmen 7 8, so that as the pitmen reciprocate the plungers will rise and fall in their plunger-compartments and force the water upwardly through the grates 9, as usual. The members of .the clamps 5 6 are secured together against the top and bottom of each plunger by vertical bolts, which are continued upwardly to form guide-rods 7 8, passing through cross-heads 7 b 8 In devices of this character it is desirable that the downward movement of the plunger be more or less rapid, so as to set up an energetic circulation of Water upwardly through the screens or grates; but the upward movement of the plunger should be slow. I will now describe the mechanical movement or device by which this fast and slow motion is imparted to the plungers from the driving-shaft 10. The driving-shaft is mounted in suitable bearings 11 on two standards 12 13, arranged near the outer ends of the shaft and between which standards the pitmen 7 8 are located, the shaft being provided on one end with the usual driving and idle pulleys 16. Secured on the shaft 10 at a point preferably midway between the bearings 11 is a fly-wheel 14, which is provided on each side with a crank or wrist pin 17 by which said fly-wheel is also made to serve as a crank. To these crankpins 17 are pivoted, respectively, two links or connecting-rods 19 20. The opposite ends of the rods 19 20 are pivotally connected, respectively, to two wrists 24 25 by means of pins 23, said wrists projecting inwardly from and being formed on or secured to crank-arms 26, Fig. 8, respectively, which impart motion to the eccentrics for operating the pitmen 7 8, respectively, and as this pitman-operating mechanism is the same in construction and operation for both pitmen, the mechanism being duplicated on opposite sides of the flywheel 14, a description of the same on one side of the fly-wheel will suffice for both.

The cranks 26 27 are each secured to or formed on an eccentric 28, which in turn is journaled on a trunnion 29, having an aperture 30, through which the driving-shaft 10 passes, and is provided with a downwardlyextending bracket 31, secured by bolts or screws 32 to the side frame or standard 12 on one side and 13 on the other, and journaled on the eccentric 28 is another eccentric, 33, surrounding which is an eccentric-strap 34. The strap 34 on one side of the machine is connected to the pitman 7 and that on the other side to the pitman 8. The eccentric 33 is provided with a flange 35, in which is formed an annular dovetailed groove 36 (see Fig. 2) or groove having other form of salient edges, and the cocentric 28 is provided with a flange 37, on which the eccentric-crank arm 26 27, before described, is formed and through which flange 37 projects a number of bolts 38, having dilated heads seated in the annular groove 36 of eccentric 33, whereby the two eccentrics 28 33 may be rigidly connected together and compelled to rotate in unison with capability of rotary adjustment with relation to each other.

The brackets 31, which are located between the bearings 11, are each provided with a boss 31, sliding vertically between guide-ribs 31, formed on the inner faces of the standards 12 13, so as to steady them on said standards, and said brackets are also provided on their outer sides with flanges 39, against which the outer ends of the eccentric 28 abut, thereby holding the eccentrics against longitudinal movement, while the eccentric-strap 34 on each of the eccentrics 33 is held in place on one side by the flange 35 and on the other side by a flange 35, formed on the outer edge of the eccentric 33.

The aperture 30 in the trunnion 29 is vertically elongated to permit the trunnion to be vertically adjusted, the holes 40, through which the bracket-securing bolts 32 pass, being similarly elongated to permit of the vertical movement of the bracket 31.

With the mechanical movement thus described it will be seen that as the shaft 10 revolves toward the right, Fig. 6, the crank 17 thereon will impart a rotary movement to the crank-arms 26 of the eccentrics 28, which being connected .to the eccentric 33 will also cause the rotation of the latter and the consequent vertical reciprocation of the plungers, and the center of rotation of the eccentric 28 being eccentric to the center of shaft 10 it necessarily follows that while the crank 17 will revolve at a uniform rate of speed the crank 26 or 27 (from which the pins 23 project)will revolve in a different circle and at a differential speed, gradually growing less as the center of the pin 23 nears the center of the shaft 10. This may be best'understood from the diagram shown in Fig. 6. In this view 17 represents the circle described by the crank 17, and 26" represents the circle described by the crank-pin 23 of crank 26, while 10 represents the center of shaft 10 and 28 the center of the eccentric 28, the line 19 representing the connecting rod or link 19 20, 17 the crank or wrist pin which connects said rod to the flywheel 14, and 23 the pin which connects said rod to the crank 26. Assuming the shaft 10 to be revolving toward the right, Fig. 6, it will be seen that while the pin 17 is traveling in the circle 17 from the point a to the point 6 the pin 23 will have traveled in the circle 26 nearly twice the distance, or from the point a to the point I), where the pin 23 is at substantially the farthest point from the center 10. From this point on until the pin 23 arrives at the place diametrically opposite the point Z), where it is nearest the center 10, the motion of pin 23 decreases relatively to the motion of the pin 17. Thus in traveling from the point 6 to the point 0 the pin 17 causes the pin 23 to travel only from the point 5 to the point 0, and from the point 0 to the point cl the motion of the pin 17 is still further decreased in the pin 23, and so on until the pin 23 arrives at a point diametrically opposite the point 6 and substantially in line with the centers 10 28, where the motion of the pin 23 is its minimum, and from this point on begins to gain on the motion of the pin 17 until it exceeds it in its maximum degree at the point 6. It will therefore be seen that inasmuch as this variation in the movement of the pin 23 is dependent upon the distance between the centers 10 28 the degree of difference between the fast and slow movements of the plungers may be readily varied with a nicety by the vertical adjustment of the brackets 31, by which the center of the eccentrics 28 33 (indicated by the reference character 28 in TIO the diagram) may be raised or lowered with reference to the center of the shaft 10, (indicated at 10 in the diagram.) It is also obvious that the length of stroke of these plungers is dependent upon the distance of the center of the eccentrics from the center of the trunnion 29. For the purpose of varying this distance with a nicety the additional eccentric 33, adjustably secured to the eccentric 28, is employed, it being apparent that by loosening the bolts 38 and rotating the eccentric 33 with reference to the eccentric 28 the length of throw of the outer eccentric may be varied by bringing the center of the strap nearer to or farther from the center of the trunnion 29, and it is further apparent that by means of this compound adjustment the length of stroke and the character of stroke of the two plungers may be varied independently, thus adapting the machine for simultaneously treating two different grades of material in the two separate tanks or hutches, respectively.

With the parts in the position shown in Fig. l of the drawings, in which the crankpins 17 are arranged on opposite sides of the center of the fly-wheel, the plungers will be operated alternatelythat is to say, their downward motions will occur one after the other, which is a desirable movement for some forms of material. In order, however, that the plungers may be caused to operate in concert or unison, if desired, I provide one side of the fly-wheel 14: with an additional crank-pin 17 arranged axially opposite one of the other crank-pins, 17, so that the connecting-rod 20 may be detached from crankpin 17 and attached to crank-pin 17, and thereby cause the eccentrics to move together.

The mechanism by which the results described with reference to Fig. 5 are produced forms the subject-matter of the claims of my patent No. 681,419, dated August 27, 1901.

Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent, is I The combination of a driving-shaft. .a pair of eccentrics through which said shaft passes and which are adjustable transversely of said shaft, a fly-wheel mounted on said shaft between said eccentrics and a crank connection between said fly-wheel and each of said eccentrics, substantially as set forth.

CHARLES J. HODGE. Witnesses:

EDNA B. JoHNsoN, F. A. HOPKINS. 

